EN 60118-7:2005

SLOVENSKI SIST EN 60118-7:2006

STANDARD
marec 2006
Elektroakustika – Slušni pripomočki – 7. del: Merjenje zmogljivostnih
karakteristik slušnih pripomočkov za zagotavljanje kakovosti pri proizvodnji,
oskrbi in dostavi (IEC 60118-7:2005)
Electroacoustics – Hearing aids – Part 7: Measurement of the performance
characteristics of hearing aids for production, supply and delivery quality
assurance purposes (IEC 60118-7:2005)
ICS 11.180.15 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60118-7
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2005

ICS 17.140.50 Supersedes EN 60118-7:1993 + A1:1994

English version
Electroacoustics –
Hearing aids
Part 7: Measurement of the performance characteristics of hearing aids
for production, supply and delivery quality assurance purposes
(IEC 60118-7:2005)
Electroacoustique –  Akustik –
Appareils de correction auditive Hörgeräte
Partie 7: Mesure des caractéristiques Teil 7: Messung der
fonctionnelles des appareils de correction Übertragungseigenschaften von
auditive aux fins d'assurance de la qualité Hörgeräten zum Zwecke der
de la production, de la livraison Qualitätssicherung in der Herstellung,
et des approvisionnements Versorgung und Lieferung
(CEI 60118-7:2005) (IEC 60118-7:2005)

This European Standard was approved by CENELEC on 2005-12-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60118-7:2005 E
Foreword
The text of document 29/585/FDIS + 29/587/INF, future edition 2 of IEC 60118-7, prepared by
IEC TC 29, Electroacoustics, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60118-7 on 2005-12-01.
This European Standard supersedes EN 60118-7:1993 + A1:1994.
This European Standard includes major changes, e.g. regarding the definition of reference test gain.
In general this edition aligns IEC 60118-7 and the ANSI S3.22 (2003) standard.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-12-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60118-7:2005 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068 NOTE Harmonized in the EN 60068 series (not modified).
IEC 60118-0 NOTE Harmonized as EN 60118-0:1993 (not modified).
IEC 60118-1 NOTE Harmonized as EN 60118-1:1995 (not modified).
IEC 60118-2 NOTE Harmonized as EN 60118-2:1995 (not modified).
__________
- 3 - EN 60118-7:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1)
IEC 60318-5 - Electroacoustics - Simulators of human - -
head and ear
Part 5: 2 cm coupler for the
measurement of hearing aids and
earphones coupled to the ear by means
of ear inserts
1)
At draft stage.
NORME CEI
INTERNATIONALE
IEC
60118-7
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2005-10
Electroacoustique –
Appareils de correction auditive –
Partie 7:
Mesure des caractéristiques fonctionnelles
des appareils de correction auditive aux fins
d'assurance de la qualité de la production,
de la livraison et des approvisionnements

Electroacoustics –
Hearing aids –
Part 7:
Measurement of the performance characteristics
of hearing aids for production, supply and
delivery quality assurance purposes

 IEC 2005 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
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PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60118-7  IEC:2005 – 3 –
CONTENTS
FOREWORD.5

1 Scope.9
2 Normative references .9
3 Terms and definitions .9
4 General conditions .15
5 Nominal characteristics and tolerances.17
6 Test box and test equipment.17
7 Test conditions .21
8 Measurements, specifications and tolerances.29
9 Maximum permitted expanded uncertainty of measurements .43

Bibliography.45

Figure 1 – Example of test arrangement for behind the ear hearing aid.23
Figure 2 – Example of test arrangement for in-the-ear hearing aid .25
Figure 3 – Example of OSPL90 and basic frequency response curves .31
Figure 4 – Example of basic frequency response curve, its tolerances and
determination of frequency range.35

Table 1 – Resistance and open circuit voltages for battery simulator .27
Table 2 – Tolerances of the frequency response.35
Table 3 – Distortion test frequencies and input sound pressure levels.37
Table 4 – Values of U for basic measurements.43
max
60118-7 © IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROACOUSTICS – HEARING AIDS –

Part 7: Measurement of the performance characteristics
of hearing aids for production, supply and delivery
quality assurance purposes
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60118-7 has been prepared by IEC technical committee 29:
Electroacoustics.
This second edition cancels and replaces the first edition published in 1983. This technical
revision includes major changes eg. regarding the definition of reference test gain. In general
this edition aligns IEC 60118-7 and the ANSI S3.22 (2003) standard.

60118-7  IEC:2005 – 7 –
The text of this standard is based on the following documents:
FDIS Report on voting
29/585/FDIS 29/590/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 60118 consists of the following parts, under the general title Electroacoustics – Hearing
1)
aids :
Part 0: Measurement of electroacoustical characteristics
Part 1: Hearing aids with induction pick-up coil input
Part 2: Hearing aids with automatic gain control circuits
Part 3: Hearing aid equipment not entirely worn on the listener
Part 4:  Magnetic field strength in audio-frequency induction loops for hearing aid
purposes
Part 5: Nipples for insert earphones
Part 6: Characteristics of electrical input circuits for hearing aids
Part 7: Measurement of the performance characteristics of hearing aids for production,
supply and delivery quality assurance purposes
Part 8: Methods of measurement of performance characteristics of hearing aids under
simulated in situ working conditions
Part 9: Methods of measurement of characteristics of hearing aids with bone vibrator
output
Part 11: Symbols and other markings on hearing aids and related equipment
Part 12: Dimensions of electrical connector systems
Part 13: Electromagnetic compatibility (EMC)
Part 14: Specification of a digital interface device

The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by
...